AVR_COTS

This approach is a way of many ways to implement the concept of "Layered Architecture which is discussed in "Reusable Firmware Development" by Jacob Bening. This is my own way to implement a configurable reusable firmware for AVR controller -ATmega32-. Each Module of this project is a Software Component, which is stored in the shelf so its called Component on the Shelf -COTS-

APP Horizontal Layer

Is a layer that contains all needed files that designed for a specific application which is totally independent of the lower layers. This layer contains the main function -The project's entry point.

HAL Horizontal Layer

This layer is designed to make all drivers needed for any External Hardware. This COTS contains Drivers for all basic external Peripherals:

• ED (Light Emitting Diode) : Sink Mode, Source Mode.
• KPD (Keypad) : Port Configurable, Pin configurable Order.
• Relay : Basic.
• DCMOTOR (DC motor) : Object-Based SW component, 2-pin controlled DC motor.
• SERVO (Servo motor) : Basic.
• SSD (seven segments display): Object-Based SW component, Decimal mode, Hex mode, Controlled Common pin.
• SWITCH (electrical switches and Buttons) : Object-Based SW component, Full configurable Port and Pin, Pull Up/Down feature.
• CLCD (Character LCD) : Supports 8-lines and 4-lines, External Character Generator, single control port, single data port, full configurable data lines in data port.
• to be continued...

MCAL Horizontal Layer

This layer is designed to implement all drivers needed for Internal Hardware features in the Microcontroller. It is configurable for almost all AVRs -ATmega- This repository holds the most common internal drivers for ATmega32 Peripherals:

• DIO : Digital Input Output.
• ADC : Analog-Digital Converter, Support Post-Build and Pre-Build Configuration.
• EXTI : External Interrupts, Support Post-Build and Pre-Build Configuration..
• GIE : Global Interrupt -for isolation-
• PORT : Port driver to initiate all pins direction and initial values.
• TIMER : Timer Driver support modes Interval, CTC with or without a hardware action for Timers 0,1,2.
• PWM : Pulse Width Modulation driver.
• ICU : Input Capture Unit based on Timer1.
• WDT : Watch Dog Timer -Time Configurable-
• UART : Universal Synchronous Asynchronous Receiver Transmitter -Serial protocol- Full Configured (baud rate, stop bit, parity bit, data width) Support Post-Build and Pre-Build Configuration.
• To be Continued...

LIB Vertical Layer

This layer contains all support header files which is used in almost all files in this COTS.

This Layer contains:

• STD_TYPES.h : For type definition for all used types to make it easy to tracing the size and sign of the data in variable.
• BIT_MATH.h : For bit manipulation operations (Set, Get, Clear, Toggle).
• Err_Type.h : For define all possible error states and correct state as a flag used in function return.
• MATH_FUNC.h : For most used functions which is converted as Function Macro (MAPPING).